A number with no comparison

Before you see anyone else's number

Los Angeles County had 78 days of unhealthy air in 2024. Is that a lot? Write yes or no, and one sentence saying why you think so.

Do not change this once you have written it. Being wrong here is the point — it is what makes the next part mean something.

What kind of chart is a single number, and what is it hiding?
Is 78 a lot? Answer twice -- before and after.
You breathe this air. Which comparison would you want used when somebody decides whether to act?

How I know

Point at the chart. Which part of it makes your answer true?

After the reveal

Look at what you wrote at the top. Did it survive? If it did not, what did you assume that turned out not to be true?